A seismic shadow zone is an area of the Earth‘s surface where seismographs cannot detect an earthquake after its seismic waves have passed through the Earth. When an earthquake occurs, seismic waves radiate out spherically from the earthquake’sfocus. The primary seismic waves are refracted by the liquid outer core of the Earth and are not […]
Read MoreRich polluters want to preach, but not pay The Paris agreement is high on ambition, but low on fixing accountability The last fortnight saw a battle between developing and developed countries pitching in with their narrative and rhetoric respectively in Le Bourget, located in the north-eastern suburbs of Paris. The eventual adoption of the Paris […]
Read MoreNational Policy on Disaster Management Vision To build a safe and disaster resilient India by developing a holistic, proactive, multi-disaster oriented and technology driven strategy through a culture of prevention, mitigation, preparedness and response. Disaster Management A disaster refers to a catastrophe, mishap, calamity or grave occurrence from natural or man-made causes, which is beyond […]
Read MoreDisaster management For far too long disaster management in India was marginalised as an issue of providing relief and rehabilitation to the people affected by natural calamities. While in the Central Government it occupied a place in the Ministry of Agriculture, in the States it was a concern of the Revenue or Relief Departments, and […]
Read MoreNuclear and Radiological Disaster The growth in the application of nuclear science and technology in the fields of power generation, medicine, industry, agriculture, research and defence has led to an increase in the risk of occurrence of Nuclear and Radiological emergencies. India has traditionally been vulnerable to natural disasters on account of its unique geo […]
Read MoreFloods in India India is highly vulnerable to floods. Out of the total geographical area of 329 million hectares (mha), more than 40 mha is flood prone. Floods are a recurrent phenomenon, which cause huge loss of lives and damage to livelihood systems, property, infrastructure and public utilities. It is a cause for concern that […]
Read MoreThe Earth’s lithosphere is broken up into a bunch of discrete pieces, called plates that move around the surface of the planet. There are seven or eight major plates (depending on how they are defined) and many minor plates. This motion is driven by the flow of the mantle rock beneath the plates and by […]
Read MoreCyclones are caused by atmospheric disturbances around a low-pressure area distinguished by swift and often destructive air circulation. Cyclones are usually accompanied by violent storms and bad weather. The air circulates inward in an anticlockwise direction in the Northern hemisphere and clockwise in the Southern hemisphere. Cyclones are classified as: (i) extra tropical cyclones (also […]
Read MoreIndia has the highest mountain chain on earth, the Himalayas, which are formed due to collision of Indian and Eurasian plate, the northward movement of the Indian plate towards China causes continuous stress on the rocks rendering them friable, weak and prone to landslides and earthquakes. The slow motion of the Indian crust, about 5 […]
Read MoreInformation An earthquake is a phenomenon that occurs without warning and involves violent shaking of the ground and everything over it. It results from the release of accumulated stress of the moving lithospheric or crustal plates. The earth’s crust is divided into seven major plates, that are about 50 miles thick, which move slowly and […]
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